My check engine light has come on when hauling my trailer. error code is p0740, fluids are full and new so how do I know if it's the torque converter clutch going bad or the solenoid??

Asked by Sep 17, 2014 at 11:09 PM about the 2008 Dodge Ram 1500 SLT Quad Cab 4WD

Question type: Maintenance & Repair

1 Answer

71,035

Check the wiring going to the transmission. Be sure plug and socket connections are clean and tight. Look for damaged wiring. If that checks out ok it's most likely going to be the torque converter clutch solenoid, inside the transmission, sticking. They are prone to do that from normal use and wear. HTH. -Jim

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